Island



(No Model.) 1 3 Sheets-Sheet 1.

H. W. HONEYMAN.

TAPPING MACHINE.

No. 437,157. Patented Sept 23, 1890,.

y (No Model.) 3 sheets-sheet 2.

H. W. HONEYMAN.

TAPPING MACHINE. No. 437,157. Patented Sept. 23, 1890.

. H'/ l ull 'W5 (No Model.) 3 Sheets-Sheet 3.

H. W. HONEYMAN.

TAPPING MACHINE.

Patgnted Sept. 23, 1890.

' UNITED STATES PATENT OFFICE.

HENRY W. HONEYIWIAN, OF PROVIDENCE, RHODE ISLAND, ASSIGNOR TOCTHEGRANGER FOUNDRY AND MACHINE COMPANY, OF SAME PLACE.

TAPPlNc-MACHINE.

SPECIFICATION forming part of Letters Patent No. 437,157, datedseptember 23, 1890. Application filed January 23, 1890i Serial No.337,881. (No model.)

To all whom it' may concern:

Be it known that I, HENRY W. HONEYMAN, a citizen of the United States,residing at Providence, in the county of Providence and State of RhodeIsland, have invented new and useful Improvements in Tapping-Machines,of which the following is a specification.

This invention relates to tools for tapping metal, and refers to animproved implement adapted to be applied to an upright or otherdrilling-machine o f ordinary construction for tapping bars, nuts, orother pieces of metal or other material; and the invention consists inthe peculiar construction and operation of the several parts of thedevice, all as hereinafter fully4 described, and referred to in theclaims.

In the drawings forming part of this speciiication, Figure 1 is aperspective view of an uprightdrill-press having applied thereto atapping device embodying my invention. Fig. 2 is a sectional sideelevation of portions of said drill-press (below described) and a sideelevation, partly in section, of said tapping device, and vof atap-chuck connected thereto. Fig. 3 is a vertical section of the case ofthe tapping device and a side elevation of itsinternal mechanism andprojecting spindles, a portion of said tap-holding chuck being thereshown. Fig. 4 is a transverse section on the line 1 1, Fig. 3. Fig. 5 isa vertical sectional view on the line 3 3, Fig. 4. Fig. 6 is a verticalsectional view on line 4 4, Fig. 4.k Line 5 5, Fig. 4, indicatesthesection of the device shown in Fig.` 2. l

In the drawings, A, Fig. 1, indicates an upright drilling-machine ofordinary construction, this being one of the many machines on which thetapping device herein shown and described is adapted to be used, saiddevice being also applicable to lathes and drillingmachines havinghorizontal spindles.

In Figs. 1 and 2, B indicates the drill-spindle; D, the lowerspindle-supporting bracket; h, the rack-sleeve inclosing the spindle Band having the usual vertical feeding movement with said spindle towardand from the -table J of the machine, said vertical movement beingimparted to the sleeve h and the spindle by means of the usualhand-wheel e, having a worm-c thereon, which engages with a worin-I gearCZ on a shaft w in bracket D, on which is a pinion o, (see Fig. 2,) saidpinion engaging with the rack y, as shown. Thus by turning shaft e thesleeve h and the spindle B are moved toward or from the table J to carryany tool, held by spindle B against or from any work there may be onsaid table, in a manner well known to machinists and others familiarwith such machines.

l Rotary motion is given to spindle B by belts and shafts, as shown inFig. 1, as usual in the drilling-machine there shown; but only one beltis brought into use when the within-described tapping device is used. f

The tapping device K is provided with case 3, of cylindrical formpreferably, and made, by preference, of cup shape, as shown, and havinga removable cover 4, which is secured thereon by suitable bolts, Fig. 4,showing at a: the holes therefor. On saidcover 4 is secured a post 6,the upper end of which is attached to an arm or lateral projection .e onvsaid sleeve h, as shown, said post forming such a rigid connectionbetween the case 3 and said sleeve as prevents the rotation of said casewhen the spindle 5 is turned by its engagement with the spindle B, asshown in Fig. 2. Any other suitable connection than said post 6 may beadopted for the purpose speciied, and said post may engage with the racky or any other suitable part of the niachine. A spindle 5 has a suitablebearing in said cover 4 of the case 3, in which it rotates, the outerend of said spindle being tapered and litted to the usual tool-socket inthe lower end of the drill-spindle B, whereby the spindle 5 is made torot-ate with the drillspindle B. The latter and the spindle 5 in theoperation of tapping or running the tap 7 (which is operated by thedevice) in or out' of a hole to be screw-threaded rotate in one and thesame directionthat is, to the rightas provided for in the device hereinshown. The lower end of the spindle 5 within the case 3 has xed thereona pinion S, on the under side of which is formed or secured thereto aclutch-section 9, and the said lower end of the spindle 5 is perforatedlongitudinally for a certain distance, as indicated by ICO dotted linesin Figs. 2 and 3. In the bottom of said case 3 is secured a box 10,which constitutes a bearing for a spindle 12, whose lower end projectsfar enough below said bottom to allow ot' properly attaching an ordinaryscrew-chuck 13 thereto, said chuck serving to hold said tap 7, as shown.The said spindle 12 has thereon inside ot case 3 a pinion 1l, throughwhich it passes loosely, said pinion having on its upper side aclutch-section 15, which is formed or secured thereon, and the upper endof said spindle 12 extends centrally through said clutch-section 9 andpinion 8 into said socket-perforation in the lower end of spindle 5, asindicated in Fig. 3, this spindle l2 in operation having a reciprocatingmovement in the socket of spindle 5, as below described. Said spindle 12has fixed thereon between said clutch-sections 9 and 15 (by pinningr orother suitable means) a clutch 16, which, through said reciprocatingvertical movements of the spindle 12, is alternately engaged irst withone and then with the other of said clutch-sections. rllhe spindle 5 isthe driving-spindle of the device, and the spindle 12 is the driventool-carrying spindle thereof. Two pinions 17 and 18 intermediate of thesaid pinions 8 and 14 are fixed on a single barrel 19, and pinion 18 hasan engagement with pinion 14 on spindle 12. The said pinion-bearingbarrel 19 and its pinions rotate on a post 20, secured to the bottom ofcase 3. (See Figs. 2 and 6.) A. third intermediate pinion 21 rotates ona post 22, fixed also to the bottom of case 3, said pinion 21 engagingwith said pinion 8 and with said pinion 17, as shown in Fig. 4.

Thus by means of the system of gearing above described, and illustratedin Figs. 2 to 6, the pinion 1l and its clutch-section 15 are given arotary motion derived from the spindle 5 contrary to that of thelast-named spindle, or to the left. The pinion 8 and its clutch-section,being fixed on spindle 5, both rotate to the right therewith.

As above stated, the clutch 16 on the vertically longitndinally-movingspindle 12 is located between said elutch-sections 9 and 15 and isadapted to be engaged with either one of them, whereby a right or lefthand rotary movement is imparted to the spindle 12 and to the tap 7attached thereto.

The operation of the within-described iniprovements in tapping is asfollows, assuming that the clutch parts of the tapping device occupy thepositions illustrated in Fig. 3: A piece or bar of metal N, having ahole therein to be tapped, is placed under the tap 7, as shown in Figs.l and 2, and the spindle B of the drill-press A, being rotated andimparting its rotary motion to spindle 5 oi the tapping device, thelatter and spindle B, by means of the movable sleeve h, as described,are moved toward table J in the direction indicated by the arrow in Fig.2, causing the lower end of the tap 7 to strike the piece N at itsproper drilled place, and thereby the downward motion of the spindle 12and the clutch 16 ceases; but the spindle 5, the case 3, and itscontained pinions are moved still farther downward until theclutch-section 15 shall be drawn out of engagement with the under sideof the clutch 16 and the upper clutch-section 9 shall be fully engagedwith the upper side of said clutch 16. At this point of the operationspindle 12 and the tap 7 have a right-hand rotation corresponding withthat of spindle 5, and the tap becomes engaged in said hole in piece N,and the operator ceases to feed spindle B downward. The piece N beingheld iirinly on the table J, the downward movement of the tap 7 by itsscrew engagement therewith causes the lat-ter, the spindle 12, and theclutch 16 to be drawn downward, and when said hole shall be fully tappedthe upper side ot' clutch 16 is parted from clutch-section 9, and itslower side becomes engaged with the clutch-section 15, as shown in Fig.3, whereby the motion of spindle 12 and the tap is automaticallyrcversed, and the tap is thereby turned out of the tapped hole, and asit and spindle 12 move up, the clutch 16 is again brought intoengagement with the clutch-section 9, and spindle 12 and the tap areagain given a righthand rotary motion preparatory to repeating theoperation in another hole in the same or in another piece of metal.

From the above description it is clearly seen that by means of thisdevice tapping operations can be very rapidly accomplished.

lVhat I claim as my invention isn l 1. In a tapping device, adriving-spindle and a driven tap-carrying spindle, both in axialalignment, but having no direct connection with each other, the drivenspindle having one end entering a socket in the adjoining end of thedriving-spindle and having a longitudinal movement therein, a unitedpinion and clutch-section fixed on said drivingspindle, a similar pinionand clutch-section running loosely on said driven spindle, and a clutchfixed thereon between said two clutchsections engaging alternately witheach, and intermediate gearing, substantially as described, connectingthe clutch-sections on said driving and driven spindles, combined andoperating substantially as described.

2. In a tapping device, a suitable case, substantially as described, adrivin g-spindle passing through the cover of said ease, having itsouter end formed to engage with a rotating spindle, and a socket in itsend within the case, a pinion 8,havingaclntch-section thereon fixed onsaid driving-spindle, a driven spindle 12, passing through the bottom ofsaid case, having its inner end entering said socket in thcdriving-spindle and having a longitudinal movement therein, a pinion 14,having a clutch-section thereon turning loosely on said driven spindle,aclutch 16, xed on said spindle 12 between said two clutch-sections, apinion 21, engaging with said pinion 8, and two pinions 17 and 18,rotating coincid- IOO IOS

IIO

ingiy,pnion 17 engaging with said pinion 21 post 6, fixed on the tappingdevice and atand pinion 18 with said pinion 14, combined taehed to saidsleeve, substantially as set and operating substantially as set forth.forth.

3. The combination, with the tapping de- HENRY W. HONEYMAN. 5 vice K,having the driving-spindle 5, of the Witnesses:

spindle B, engaging with said spindle 5, the HRISTR. RHODES, racksleeveh, inclosing spindle B, and the WILL. S. HORTON.

